External Amplifiers
These jumpers must be set if external amplifiers are connected to the controller through the AMP-19520/40.
Install MCM and AEN if the axis drives an external servo amplifier (other than the AMP-19520/40). That axis's PWM
and SGN digital outputs will be inaccessible.
Install PWM and SGN if the axis drives an external stepper amplifier (or external PWM-input servo amplifier). That
axis's MCM and AEN outputs will be inaccessible. The SM jumper(s) must be installed on the controller.
MCM
Jumper MCM to J3.x to bring that axis's Motor Command Analog Output to the J3 AUX I/O J3 connector at pin x.
AEN
Jumper AEN to J3.x to bring that axis's motor Amplifier Enable Digital Output to the J3 AUX I/O J3 connector at pin x.
PWM
Jumper PWM to J3.x to bring that axis's Pulse Width Modulation Digital Output to the J3 AUX I/O J3 connector at pin
x.
SGN
Jumper SGN to J3.x to bring that axis's Sign Digital Output to the J3 AUX I/O J3 connector at pin x.
Indicator Lights and Errors
The amplifier is protected against under-voltage, over-current, over-voltage, and over-temperature conditions, which are
indicated by LEDs. It responds to these conditions by disabling and setting it's AMP ERR digital output low. The
controller can be informed of amplifier errors via AMP ERR by installing the 7_IN or ABORT jumpers.
POWER (and Under-Voltage)
Indicates whether amplifier power (18-80 VDC) AND board-level power (5, +/-12 VDC) is applied (both the POWER
connector and 100 pin J1 connector must be connected for this indicator to light).
If the power supply voltage drops below 12 V (Under-Voltage), the amplifier disables and the POWER light will turn
off. The amplifier will automatically re-enable once the supply rises above the 12 V.
OVERCURRENT
If the current on any axis exceeds 10 A, the amplifier will disable. The amplifier will remain disabled until the controller
sets all Amp Enable lines low and subsequently sets at least one high (issue MO; SH to reset). This fault indicates a
system-level problem and is usually due to a short across the motor leads or a short from a motor lead to ground.
OVERVOLTAGE
Indicates that the amplifier power (18-80 VDC) applied to the POWER connector has risen above 94 V due to
regenerative energy fed back from the motor. The amplifier will short the motor leads (regenerative braking) and will
automatically return to normal operation when the supply drops below 89 V.
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Indicator Lights and Errors
AMP-19520/40
